Detection of Airborne Volcanic Ash Using Radar

Link:
Autor/in:
Verlag/Körperschaft:
Elsevier BV
Erscheinungsjahr:
2016
Medientyp:
Text
Schlagworte:
  • Ground-based radar
  • Radar basics
  • Scattering of electromagnetic waves
  • Volcanic ash
Beschreibung:
  • In recent decades, it has been demonstrated that ground-based radar can be used to measure the extent of volcanic ash clouds as well as mass eruption rate. Various types of ground-based radar exist that allow the analysis of particular aspects of volcanic ash clouds: long-range, high-power weather radar systems capture the overall evolution and lateral as well as vertical extent of volcanic eruption clouds. Smaller, lower power, portable mini radar systems with a maximum weight of 50 kg and less than 50 W of power have been especially designed to monitor volcanic activity. In general, the closer the radar is positioned to the volcano, the more the signal-to-noise ratio as well as sampling volume improves, and therefore, the ability to resolve details in the eruption cloud increases. Both high- and low-power radars can provide some crude estimate of particle sizes that can be used to estimate mass eruption rate at the vent on timescales down to seconds. In this chapter, we review the basic concept of ground-based radar and discuss various applications for monitoring volcanic ash.
Lizenz:
  • info:eu-repo/semantics/restrictedAccess
Quellsystem:
Forschungsinformationssystem der UHH

Interne Metadaten
Quelldatensatz
oai:www.edit.fis.uni-hamburg.de:publications/f3ed5d4d-b72c-4ed9-80b5-176e54d47624